Release Notes for Cisco ASR 901 Series Aggregation Services Router for CiscoIOSRelease15.2(2)SNI
Determining the Software Version
New Hardware Features in Release 15.2(2)SNI
New Software Features in Release 15.2(2)SNI
Digital Optical Monitoring for 1Gigabit Ethernet SFPs
Modified Software Features in Release 15.2(2)SNI
Shaper Burst Commit Down to 1 ms
This release notes is for the Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.2(2)SNI and contains the following sections:
The Cisco ASR 901 Series Aggregation Services Router is a cell-site access platform specifically designed to aggregate and transport mixed-generation radio access network (RAN) traffic. The router is used at the cell site edge as a part of a 2G, 3G, or 4G RAN.
Table 1 lists the Cisco ASR 901 router model versions.
Note Some of the Cisco ASR 901 models have port based licensing. For more details, see the Licensing chapter in Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide.
The Cisco ASR 901 router helps enable a variety of RAN solutions by extending IP connectivity to devices using Global System for Mobile Communications (GSM), General Packet Radio Service (GPRS), Node Bs using High Speed Packet Access (HSPA) or Long Term Evolution (LTE), base transceiver stations (BTSs) using Enhanced Data Rates for GSM Evolution (EDGE), Code Division Multiple Access (CDMA), CDMA-2000, EVDO, or WiMAX, and other cell-site equipment.
It transparently and efficiently transports cell-site voice, data, and signaling traffic over IP using traditional T1 and E1 circuits, as well as alternative backhaul networks such as Carrier Ethernet and DSL, Ethernet in the First Mile (EFM), and WiMAX. It also supports standards-based Internet Engineering Task Force (IETF) Internet protocols over the RAN transport network, including those standardized at the Third-Generation Partnership Project (3GPP) for IP RAN transport. Custom designed for the cell site, the Cisco ASR 901 router features a small form factor, extended operating temperature, and cell-site DC input voltages.
Table 2 lists the supported system configurations for the Cisco ASR 901 router:
Table 2 lists the memory available for Cisco ASR 901 router.
There are no new hardware features in Cisco IOS Release 15.2(2)SNI.
This release implements IPv6 VPN Provider Edge Transport over MPLS (6PE) and IPv6 on VPN Provider Edge Routers (6VPE) on the Cisco ASR 901 Series Aggregation Services Routers.
For information about this feature, see the IPv6 over MPLS: 6PE and 6VPE guide at the following URL: http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/6pe_6vpe.html
The 1588V2 Boundary Clock feature allows you to use the PTP boundary clock on the Cisco ASR 901 router. A PTP boundary clock acts as a middle hop between a PTP master and PTP slaves.
For more information about this feature, see Configuring Clocking guide at the following URL: http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/clocking.html
The installation of 1588BC license on the Cisco ASR 901 router allows you to use the PTP boundary clock.
For more information about this feature, see Licensing guide at the following URL: http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/lic.html
The Multiprotocol Label Switching (MPLS) support over Multilink PPP feature allows you to use labeled switch paths (LSPs) over MLPPP links.
For information about this feature, see Configuring MLPPP guide at the following URL: http://cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/mlppp.html
The Remote Loop-free Alternate (LFA) - Fast Reroute (FRR) feature uses a backup route, computed using dynamic routing protocol during a node failure, to avoid traffic loss.
For information about this feature, see Remote Loop-Free Alternate - Fast Reroute guide at the following URL: http://cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/remote_lfa-frr.html
This feature allows you to monitor real-time parameters of the router, such as optical input and output power, temperature, laser bias current, and transceiver supply voltage.
For more information about this feature, see Digital Optical Monitoring guide at the following URL: http://cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/dom.html
The zero-touch deployment capability enables the Cisco ASR 901 router to auto configure itself, download an updated image, connect to the network, and start the operation as soon as it is cabled and powered up.
For more information about this feature, see Managing and Monitoring Network Management Features guide at the following URL:
http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/managingandmonitoring.html
This release has a new upgrade ROMMON (15.2(2r)SNI) bundled with the IOS image. Upgrading to the new IOS image (Cisco IOS Release 15.2(2)SNI) automatically upgrades the ROMMON to the new version. After the ROMMON upgrade, the router performs an additional reload for the upgrade to take effect.
For more details, see Auto upgrade of Rommon section at the following URL: http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/swupgrade.html
Starting with Cisco IOS Release 15.2(2)SNI, the lower limit of the committed burst size (bc) is changed to 1 ms from 4 ms.
For information about this feature, see Configuring QoS guide at the following URL: http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/qos.html
Cisco IOS Release 15.2(2)SNI for the Cisco ASR 901 Series Aggregation Services Router has the following general limitations and restrictions:
Note For limitations and restrictions that are specific to features, see the respective feature guide.
Table 3 and Table 4 shows the SFP modules supported on the Cisco ASR 901 routers:
Table 3 SFPs Supported on the Cisco ASR 901 1G Router
Table 4 SFPs Supported on the Cisco ASR 901 10G Router
Note ● For information on how to configure SFPs, see the Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide.
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats, severity 2 caveats are less serious, and severity 3 caveats are the least serious of these three severity levels. Only select severity 3 caveats are listed.
This section contains the following topics:
The Caveats section only includes the bug ID and a short description of the bug. For details on the symptoms, conditions, and workaround for a particular bug you must use the Bug ToolKit. This section explains how to use the bug toolkit and has the following topics:
This section explains how to use the Bug ToolKit to search for a specific bug.
Step 1 Go to http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl.
You are prompted to log into Cisco.com. After successful login, the Bug Toolkit page opens.
Step 2 Click Launch Bug Toolkit.
Step 3 To search for a specific bug, enter the bug ID in the Search for Bug ID field and click Go in the Search Bugs tab.
To search for bugs in a specific release, enter the following search criteria:
– Severity—Select the severity level.
– Status—Select Open, Fixed, or Terminated.
Select Open to view all the open bugs. To filter the open bugs, clear the Open check box and select the appropriate sub-options that appear below the Open check box. The sub-options are New, Held, More, Open, Waiting, Assigned, Forwarded, Postponed, Submitted, and Information Required. For example, if you want to view only new bugs in Cisco IOS Release 15.2(2)SNI, select New.
Select Fixed to view fixed bugs. To filter fixed bugs, clear the Fixed check box and select the appropriate sub-options that appear below the Fixed check box. The sub-options are Resolved or Verified.
Select Terminated to view terminated bugs. To filter terminated bugs, clear the Terminated check box and select the appropriate sub-options that appear below the terminated check box. The sub-options are Closed, Junked, and Unreproducible. Select multiple options as required.
– Advanced—Select the Show only bugs containing bug details check box to view only those bugs that contain detailed information, such as symptoms and workarounds.
– Modified Date—Select this option if you want to filter bugs based on the date on which the bugs were last modified.
– Results Displayed Per Page—Select the appropriate option from the list to restrict the number of results that appear per page.
Step 4 Click Search. The Bug Toolkit displays the list of bugs based on the specified search criteria.
This section explains how to use Bug ToolKit to save the bugs retrieved by your search in a specific release.
Step 1 Perform a search.
Repeat Step 1 through Step 3 in the “Search Bugs” section.
Step 2 Select the check boxes next to the bug you want to save in the Search Results page and click Save Checked.
The Save Bug Settings area appears under the Search Bugs tab.
Step 3 Specify group settings in the Place in Group field.
Existing groups have their group notification options already set. If you select an existing group, go to Step 5.
Step 4 Specify the following email update (group notification) options.
– On a schedule—Specify the frequency of email delivery.
The Bug ToolKit saves the selected bugs in the specified group.
This section explains how to use Bug ToolKit to save your search after searching for the bugs in a specific release.
Step 1 Perform a search.
Repeat Step 1 through Step 3 in the “Search Bugs” section.
Step 2 Click Save Search in the Search Results page to save your search with the specified criteria.
The Save Search Settings area appears under the My Notifications tab.
Step 3 Enter a name for your search in the Search Name field.
Step 4 Specify group settings in the Place in Group field.
Existing groups have their group notification options already set. If you select an existing group, go to Step 6.
Step 5 Specify the following email update (group notification) options.
– On a schedule—Specify the frequency of email delivery.
The Bug ToolKit saves your search in the specified group.
This section explains how to use Bug ToolKit to retrieve a saved search or bugs.
Step 1 Go to http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl and click Launch Bug Toolkit.
You are prompted to log into Cisco.com.
Step 2 Click My Notifications tab.
My Notifications tab displays the Group Name, Summary, and Actions.
Step 3 Click the group in the Group Name column. The group contains saved search and bugs.
Step 4 Retrieve saved search or bugs.
The My Notifications tab also provides option to delete bug, delete search, delete group, edit group notifications (in the Actions column), move selected saved search or bugs to different group, and to export saved bugs in all the groups to a spreadsheet.
The Bug ToolKit provides the following options to export bugs to a spreadsheet:
If you are unable to export the spreadsheet, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC (1-800-553-2447).
This section provides information about the open caveats for the Cisco ASR 901 router running Cisco IOS Release 15.2(2)SNI.
This section provides information about the resolved caveats for the Cisco ASR 901 router running Cisco IOS Release 15.2(2)SNI.
The following sections describe troubleshooting commands you can use with the Cisco ASR 901 Series Aggregation Services Router.
Collecting Data for Router Issues
To collect data for reporting router issues, issue the following command:
Collecting Data for ROMMON Issues
To collect data for ROMMON issues, issue the following command while in the EXEC mode:
Note If you contact Cisco support for assistance, we recommend that you provide any crashinfo files stored in flash memory. For more information about crashinfo files, see http://www.cisco.com/en/US/products/hw/routers/ps167/products_tech_note09186a00800a6743.shtml.
Documents related to the Cisco ASR 901 Series Aggregation Services Router include the following:
To access the related documentation on Cisco.com, go to:
http://www.cisco.com/en/US/partner/products/ps12077/tsd_products_support_series_home.html
For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Release Notes for Cisco ASR 901 Aggregation Series Router for Cisco IOS Release 15.2(2)SNI